Home / 8,213.45-12,312.86-3,018.11

Finding the Fourth Proportional to 8,213.45, 12,312.86 and 3,018.11

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Solution

The fourth proportional to 8,213.45, 12,312.86 and 3,018.11 is: 4,524.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,213.45 : 12,312.86 = 3,018.11 : x
  2. Step 2: Convert to fraction form
    8,213.45/12,312.86 = 3,018.11/x
  3. Step 3: Cross multiply
    8,213.45x = 12,312.86 × 3,018.11
  4. Step 4: Simplify right side
    8,213.45x = 37,161,489.24
  5. Step 5: Solve for x
    x = 37,161,489.24/8,213.45
  6. Step 6: Final answer
    x = 4,524.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.